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Modifying existing preheater systems for improved productivity and efficiency (cement industry)
Three cases of preheater/precalciner modifications covering a production capacity ranging from 1500 to 4500 mt/d for plants in France, Canada and the USA are described. The first example deals with the addition of an RSP type furnace to an existing PREPOL-AT precalciner for capacity enhancement and improvement of circulating elements behavior within the kiln. The second covers the replacement of an ACL grate preheater by a one-stage PREPOL-AS calciner enabling low alkali clinker production from high alkali, high sulfur, high kerogen raw materials in an environmentally sound manner. The third example shows the replacement of two underdimensioned Fuller-SF-calciners of a two-string preheater kiln by one large FLS type SLC-S precalciner in connection with the installation of a 10-50% capacity range bypass system. All three kiln conversions have been basically successful and able to meet the expectations almost entirely. However, since they came onstream a comparatively short while ago, some optimization and fine tuning work still has to be completed.
Modifying existing preheater systems for improved productivity and efficiency (cement industry)
Three cases of preheater/precalciner modifications covering a production capacity ranging from 1500 to 4500 mt/d for plants in France, Canada and the USA are described. The first example deals with the addition of an RSP type furnace to an existing PREPOL-AT precalciner for capacity enhancement and improvement of circulating elements behavior within the kiln. The second covers the replacement of an ACL grate preheater by a one-stage PREPOL-AS calciner enabling low alkali clinker production from high alkali, high sulfur, high kerogen raw materials in an environmentally sound manner. The third example shows the replacement of two underdimensioned Fuller-SF-calciners of a two-string preheater kiln by one large FLS type SLC-S precalciner in connection with the installation of a 10-50% capacity range bypass system. All three kiln conversions have been basically successful and able to meet the expectations almost entirely. However, since they came onstream a comparatively short while ago, some optimization and fine tuning work still has to be completed.
Modifying existing preheater systems for improved productivity and efficiency (cement industry)
Modifikation eines bestehenden Vorwärmsystems zur verbesserten Produktion und Effizienz (Zementindustrie)
Lang, T.A. (author)
1990
15 Seiten, 1 Quelle
Conference paper
English
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